Heri Parau / Mata Parau / Koro Whakatipu Kai
Hei wāhanga matua o te parau papa pokepoke, ka pā tika te hea parau ki te oneone, ka mau i ngā kaha pānga me te waku nui. Ko tōna kounga te mea e whakatau tika ana i te whai huatanga me te utu o ngā mahi parau. He mea hanga tēnei hea parau mai i te maitai koranu kounga teitei mā te whakamahi i te hangarau maimoatanga wera matatau, ā, he mea hanga motuhake mō ngā mahi ahuwhenua hou e whakatairanga ana i te whai huatanga teitei me te iti o te whakamahinga. Ahakoa e whakamahia ana mō te whakahoki whenua hou, te parau hohonu me te wetewete, te parau ā-wā rānei, ko tōna urunga oneone me te ātete pānga pai rawa atu he mea pai mō āu taputapu e mau ana ki te tarakihana.
He rerekē tēnei hua i ngā wāhanga maitai whakarewa noa, he maitai konupora 65Mn, he maitai boron kounga teitei rānei 30MnB5 hei rauemi turanga. Mā te whakamahana whakauru me te hanga mate, ka whakarite kia matotoru te hanganga whakarewa o roto, kia kore he porosity me ngā kōhao onepu. Ka whakamahia te hangarau tinei wera matihiko ki ngā mata mahi matua me ngā taha tapahi hei whakatutuki i te pakeketanga o te mata o te 38-45 HRC, ka hua ake he āhuatanga "mārō i waho, mārō i roto" - kia kore ai te mata tapahi e pakaru, e tawhito rānei i raro i te waku roa, me te hoatu hoki i te tinana koko he pakari pai, he ngāwari ki te tu atu ki ngā pānga kino mai i ngā whenua uaua kei roto ngā toka, ngā pakiaka rākau, me ētahi atu, ka ārai pai i te pakaru.
Hoahoa mata tapahi whakakoi-ake: E aro ana ki ngā āhuatanga waku o te oneone me te konganuku, he hoahoa pewa āta whakapiko te mata. I te wā e whakamahia ana, ka pupuri te waku i te mata kia koi tonu, ka whakaiti i te ātete ki te kukume tarakihana, ā, ka penapena i te 8%-10% o te wahie ki te whakataurite ki ngā koko papatahi tuku iho.
He mata āhuahanga tino tika: I hangaia kia rite ki ngā mātāpono o te hau me te oneone, ā, he āhua piko te mata. I te wā e whakamahia ana, ka hurihia mārire, ka kapi katoa te oneone, ka tere te pakaru o te oneone, ka maeneene te mahi whenua, ka āwhina i ngā mahi rui i muri mai.
• Ka taea e mātou te tuku hea parau me te whakatakotoranga 5×210 mm i te utu whakataetae.
• Kei te wātea ngā rahi me ngā kōhao kua whakaritea kia rite ki tāu tuhi.
• He kounga pumau me te tuku i te wā tika kua whakamanahia.
